Liquid crystal display

ABSTRACT

A liquid crystal display of an exemplary embodiment includes: first and second gate line disposed on a substrate and extending in a first direction; first and second data line disposed on the substrate; a first transistor connected to the first gate line and the first data line; a second transistor connected to the second gate line and the second data line; a first pixel electrode overlapping the first transistor and the first gate line; a second pixel electrode overlapping the second transistor and the second gate line; a reflective layer disposed between the first gate line and the first data line, the second data line and the first pixel electrode and extending in the first direction, the first pixel electrode is disposed at a next row of the second pixel electrode in the second direction, and the first transistor is connected to the second pixel electrode.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean PatentApplication No. 10-2016-0105111 filed in the Korean IntellectualProperty Office on Aug. 18, 2016, the entire contents of which areincorporated herein by reference.

BACKGROUND (a) Technical Field The present disclosure relates to aliquid crystal display, and in detail, relates to a reflective liquidcrystal display. (b) Description of the Related Art

A liquid crystal display (LCD) is one of the most commonly used displaydevices. The liquid crystal display applies an electric field to aliquid crystal panel including a liquid crystal layer to change anarrangement of liquid crystal molecules, thereby displaying an image bycontrolling a transmittance of light.

The liquid crystal display is non-emissive such that the liquid crystaldisplay includes a backlight unit to provide the light to the liquidcrystal panel at a rear surface of the liquid crystal panel. The liquidcrystal display may be referred to as a transmissive mode liquid crystaldisplay.

Further, the liquid crystal display includes a reflective mode liquidcrystal display reflecting external light, including natural light, to areflective layer of the liquid crystal panel to display the imagewithout the backlight unit.

The reflective mode liquid crystal display does not include thebacklight unit providing the light such that research to increasereflectivity is underway.

The above information disclosed in this Background section is only forenhancement of understanding of the background of the inventive conceptand therefore it may contain information that does not form the priorart that is already known in this country to a person of ordinary skillin the art.

SUMMARY

Exemplary embodiments provides a reflective liquid crystal displayimproving reflectivity and preventing distortion of a voltage applied toa pixel electrode.

A liquid crystal display according to an exemplary embodiment of thepresent inventive concept includes: a first substrate; a first gate linedisposed on the first substrate and extending in a first direction; asecond gate line disposed on the first substrate, extending in the firstdirection, and disposed above the first gate line in a second directionon a plane, the second direction perpendicular to the first direction; afirst data line and a second data line disposed on the first substrate,insulated from the first gate line and the second gate line, the firstdata line and the second data line disposed to be close to each other; afirst transistor connected to the first gate line and the first dataline; a second transistor connected to the second gate line and thesecond data line; a first pixel electrode overlapping the firsttransistor and the first gate line; a second pixel electrode overlappingthe second transistor and the second gate line; and a first reflectivelayer disposed between the first gate line and the first data line,disposed between the second data line and the first pixel electrode, andextending in the first direction, wherein the first pixel electrode isdisposed under the second pixel electrode in the second direction on aplane, and the first transistor is connected to the second pixelelectrode.

The first reflective layer may cover the entire first gate line and thefirst transistor and may cover the entire width of a portion of thefirst data line and the entire width of a portion of the second dataline.

A second reflective layer disposed between the second gate line and thefirst data line, disposed between the second data line and the secondpixel electrode extending in the first direction, may be furtherincluded.

The second reflective layer may cover the entire second gate line andthe second transistor, and may cover the entire width of a portion ofthe first data line and the entire width of a portion of the second dataline.

A third gate line disposed on the first substrate and disposed under thefirst gate line in the second direction on a plane; a third transistorconnected to the third gate line and the second data line; and a thirdpixel electrode overlapping the third gate line and the third transistorand disposed under the first pixel electrode in the second direction ona plane, may be further included.

The first pixel electrode may be connected to the third transistor.

A third reflective layer disposed between the third gate line and thefirst data line, disposed between the second data line and the thirdpixel electrode extending in the first direction, may be furtherincluded.

The third reflective layer may cover the entire third gate line and thethird transistor, and may cover the entire width of a portion of thefirst data line and the entire width of a portion of the second dataline.

A boundary of the first pixel electrode and the second pixel electrodemay overlap the first reflective layer, and a boundary of the firstpixel electrode and the third pixel electrode may overlap the thirdreflective layer.

A first storage electrode line disposed on the first substrate anddisposed between the first gate line and the second gate line on aplane; and a third storage electrode line disposed on the firstsubstrate and disposed between the first gate line and the third gateline on a plane, may be further included.

The first storage electrode line may include a first storage electrodeprotruded in the second direction on a plane, and the third storageelectrode line may include a third storage electrode protruded in thesecond direction on a plane.

A drain terminal of the first transistor may include a first storagecapacitive plate overlapping the first storage electrode, and the drainterminal of the third transistor may include a third storage capacitiveplate overlapping the third storage electrode.

The first pixel electrode may be connected to the third storagecapacitive plate, and the second pixel electrode may be connected to thefirst storage capacitive plate.

The boundary of the first reflective layer and the second reflectivelayer may overlap the first storage capacitive plate, and the boundaryof the first reflective layer and the third reflective layer may overlapthe third storage capacitive plate.

The first reflective layer, the second reflective layer, the thirdreflective layer, the first storage capacitive plate, and the thirdstorage capacitive plate may include the same material.

A first color filter disposed between the first pixel electrode and thefirst reflective layer; and a second color filter disposed between thesecond pixel electrode and the first reflective layer, may be furtherincluded, and the first color filter and the second color filter mayrepresent different colors from each other.

The first substrate may include a display area displaying an image and aperipheral area enclosing the display area, the first reflective layer,the second reflective layer, and the third reflective layer may bedisposed at the display area and the peripheral area, and the firstreflective layer, the second reflective layer, and the third reflectivelayer may receive a ground voltage or a common voltage at the peripheralarea.

According to the exemplary embodiments, the reflectivity is improved inthe reflective liquid crystal display and the distortion of the voltageapplied to the pixel electrode may be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view schematically showing a liquid crystal displayaccording to an exemplary embodiment of the present inventive concept.

FIG. 2 is a view schematically showing an example of a partial pixel ofthe liquid crystal display according to FIG. 1.

FIG. 3 is a view schematically showing an example of a cross-sectiontaken along a line III-III of FIG. 2.

FIG. 4 is a view schematically showing an example of a cross-sectiontaken along a line IV-IV of FIG. 2.

FIG. 5 is a view is a view schematically showing an example of across-section of a liquid crystal display according to another exemplaryembodiment of the present inventive concept.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present inventive concept will be described more fully hereinafterwith reference to the accompanying drawings, in which exemplaryembodiments of the invention are shown. As those skilled in the artwould realize, the described embodiments may be modified in variousdifferent ways, all without departing from the spirit or scope of thepresent inventive concept.

In order to clearly explain the present inventive concept, portions thatare not directly related to the present inventive concept are omitted,and the same reference numerals are attached to the same or similarconstituent elements through the entire specification.

In addition, the size and thickness of each configuration shown in thedrawings are arbitrarily shown for better understanding and ease ofdescription, but the present inventive concept is not limited thereto.In the drawings, the thickness of layers, films, panels, regions, etc.,are exaggerated for clarity. In the drawings, for better understandingand ease of description, the thicknesses of some layers and areas areexaggerated.

It will be understood that when an element such as a layer, film,region, or substrate is referred to as being “on” another element, itcan be directly on the other element or intervening elements may also bepresent. In contrast, when an element is referred to as being “directlyon” another element, there are no intervening elements present. Further,in the specification, the word “on” or “above” means positioned on orbelow the object portion, and does not necessarily mean positioned onthe upper side of the object portion based on a gravitational direction.

In addition, unless explicitly described to the contrary, the word“comprise” and variations such as “comprises” or “comprising” will beunderstood to imply the inclusion of stated elements but not theexclusion of any other elements.

Further, in this specification, the phrase “on a plane” means viewing atarget portion from the top, and the phrase “on a cross-section” meansviewing a cross-section formed by vertically cutting a target portionfrom the side.

FIG. 1 is a view schematically showing a liquid crystal displayaccording to an exemplary embodiment of the present inventive concept.

Referring to FIG. 1, a liquid crystal display 1000 according to thepresent exemplary embodiment includes a display area DA displaying animage and a peripheral area PA enclosing the display area DA. Thedisplay area DA occupies most of the liquid crystal display 1000. Theperipheral area PA is a region where the image is not displayed, and isreferred to as a non-display area or a bezel.

A plurality of pixels are disposed in the display area DA. The pluralityof pixels includes a red pixel R, a green pixel G, a blue pixel B, and awhite pixel W. The red pixel R, the green pixel G, the blue pixel B, andthe white pixel W respectively includes a red color filter 230R, a greencolor filter 230G, a blue color filter 230B, and a white color filter230W that are described later.

The red pixel R and the green pixel G are disposed to be adjacent in afirst direction of an x-axis direction, and the red pixel R and the bluepixel B are disposed to be adjacent in a second direction of a y-axisdirection. The blue pixel B and the white pixel W are disposed to beadjacent in the first direction, and the green pixel G and the whitepixel W are disposed to be adjacent in the second direction. The redpixel R, the green pixel G, the blue pixel B, and the white pixel W arerepeatedly disposed in the display area DA with the above arrangementstructure.

Also, the liquid crystal display 1000 according to the present exemplaryembodiment includes a plurality of reflective layers 165 reflectingexternal light including natural light. Each reflective layer 165 isdisposed at the display area DA and the peripheral area PA. Eachreflective layer 165 overlaps two pixels adjacent in the seconddirection and extends in the first direction. Each reflective layer 165may receive a ground voltage or a common voltage in the peripheral areaPA. The reflective layer 165 may include the conductive material havinghigh reflectivity such as aluminum (Al), aluminum alloys, silver (Ag),silver alloys, molybdenum (Mo), and molybdenum alloys.

Next, a structure of the liquid crystal display according to theexemplary embodiment shown in FIG. 1 will be described with reference toFIG. 2 to FIG. 4.

FIG. 2 is a view schematically showing an example of a partial pixel ofthe liquid crystal display according to FIG. 1. FIG. 3 is a viewschematically showing an example of a cross-section taken along a lineof FIG. 2. FIG. 4 is a view schematically showing an example of across-section taken along a line IV-IV of FIG. 2.

Referring to FIG. 2 to FIG. 4, the liquid crystal display according tothe present exemplary embodiment includes a first display panel 100, asecond display panel 200, and a liquid crystal layer 3 disposed betweenthe first display panel 1100 and the second display panel 200.

First, the first display panel 100 will be described.

A plurality of gate lines and a plurality of storage electrode lines areformed on a first substrate 110 formed of transparent glass, plastic, orthe like. The plurality of gate lines and the plurality of storageelectrode lines extend in the first direction as the x-axis direction.The plurality of gate lines and the plurality of storage electrode linesmay include the conductive material having high reflectivity such asaluminum (Al), aluminum alloys, silver (Ag), silver alloys, molybdenum(Mo), and molybdenum alloys.

The plurality of gate lines transmits a gate signal to each pixel byreceiving a gate signal from the outside, and include a first gate line121 n, a second gate line 121 l, and a third gate line 121 m. The secondgate line 121 l is separated from the first gate line 121 n in thesecond direction of the y-axis direction on a plane, extends to beparallel to the first gate line 121 n, and receives the gate signalearlier than the first gate line 121 n. The third gate line 121 m isseparated from the first gate line 121 n in the second direction,extends to be parallel to the first gate line 121 n and the second gateline 121 l, and receives the gate signal later than the first gate line121 n. The second gate line 121 l, the first gate line 121 n, and thethird gate line 121 m are sequentially disposed in the second direction.

The first gate line 121 n includes a plurality of first gate electrodes124 n protruded from the first gate line 121 n in the second direction.The second gate line 121 l includes a plurality of second gateelectrodes 124 l protruded from the second gate line 121 l in the seconddirection. The third gate line 121 m includes a plurality of third gateelectrodes 124 m protruded from the third gate line 121 m in the seconddirection.

The plurality of storage electrode lines receive the common voltage, andinclude first storage electrode lines 131 n and third storage electrodelines 131 m. The first storage electrode lines 131 n are disposedbetween the first gate line 121 n and the second gate line 121 l on aplane, and are disposed to be close to the first gate line 121 n. Thethird storage electrode lines 131 m are disposed between the first gateline 121 n and the third gate line 121 m on a plane first, and aredisposed to be close to the third gate line 121 m.

The first storage electrode lines 131 n include a plurality of firststorage electrodes 135 n protruded in the second direction. The thirdstorage electrode lines 131 m include a plurality of third storageelectrodes 135 m protruded in the second direction.

Also, the plurality of storage electrode lines further include secondstorage electrode lines (not shown) disposed above the second gate line121 l in the second direction on a plane. The second storage electrodelines are disposed to be close to the second gate lines 121 l. Thesecond storage electrode lines includes a plurality of second storageelectrodes (not shown) protruded in the second direction.

A gate insulating layer 140 is disposed on the plurality of gate linesand the plurality of storage electrode lines. The gate insulating layer140 may be made of a silicon oxide (SiOx). In the present exemplaryembodiment, the gate insulating layer 140 is formed of a single-layeredstructure, however it is not limited thereto, and it may have amultilayer structure including at least two insulating layers havingdifferent physical properties.

A plurality of semiconductor layers are disposed on the gate insulatinglayer 140. The plurality of semiconductor layers include a plurality offirst semiconductor layers 154 n, a plurality of second semiconductorlayers 154 l, and a plurality of third semiconductor layers 154 m. Eachfirst semiconductor layer 154 n overlaps each first gate electrode 124n, each second semiconductor layer 154 l overlaps each second gateelectrode 124 l, and each third semiconductor layer 154 m overlaps eachthird gate electrode 124 m.

A plurality of data lines and a plurality of drain electrodes aredisposed on the plurality of semiconductor layers and the gateinsulating layer 140. The plurality of data lines and the plurality ofdrain electrodes may include the conductive material having highreflectivity such as aluminum (Al), aluminum alloys, silver (Ag), silveralloys, molybdenum (Mo), and molybdenum alloys.

The plurality of data lines include a plurality of first data lines 171a and a plurality of second data lines 171 b. Each first data line 171 aand each second data line 171 b receive the data signal from the outsideand transmit it to each pixel, and each first data line 171 a and eachsecond data line 171 b extend in the second direction. Each first dataline 171 a and each second data line 171 b include a plurality of sourceelectrodes, and the plurality of source electrodes include a pluralityof first source electrodes 173 n, a plurality of second sourceelectrodes 173 l, and a plurality of third source electrodes 173 m.

The first source electrode 173 n overlaps the first gate electrode 124 nand the first semiconductor layer 154 n, the second source electrode 173l overlaps the second semiconductor layer 154 l and the second gateelectrode 124 l, and the third source electrode 173 m overlaps the thirdsemiconductor layer 154 m and the third gate electrode 124 m.

The second source electrode 173 l and the third source electrode 173 mare protruded from each first data line 171 a and each second data line171 b in the same direction, and the first source electrode 173 n isprotruded in the direction opposite to that of the second sourceelectrode 173 l.

The plurality of drain electrodes include a plurality of first drainelectrodes 175 n, a plurality of second drain electrodes 175 l, and aplurality of third drain electrodes 175 m.

The first drain electrode 175 n faces the first source electrode 173 nand overlaps the first semiconductor layer 154 n and the first gateelectrode 124 n. The first drain electrode 175 n includes a firststorage capacitive plate 177 n extending from the first drain electrode175 n and having a part in which an area overlapping the first storageelectrode 135 n is wide. Here, the first storage capacitive plate 177 nand the first storage electrode 135 n form a storage capacitor using thegate insulating layer 140 as a dielectric material.

The second drain electrode 175 l faces the second source electrode 173 land overlaps the second semiconductor layer 154 l and the second gateelectrode 124 l. The second drain electrode 175 l includes a secondstorage capacitive plate (not shown) extending from the second drainelectrode 175 l and having a part in which an area overlapping thesecond storage electrode is wide. Here, the second storage capacitiveplate and the second storage electrode form a storage capacitor usingthe gate insulating layer 140 as the dielectric material.

The third drain electrode 175 m faces the third source electrode 173 mand overlaps the third semiconductor layer 154 m and the third gateelectrode 124 m. The third drain electrode 175 m includes a thirdstorage capacitive plate 177 m extending from the third drain electrode175 m and having a part in which an area overlapping the third storageelectrode 135 m is wide. Here, the third storage capacitive plate 177 mand the third storage electrode 135 m form a storage capacitor using thegate insulating layer 140 as the dielectric material.

The first gate electrode 124 n, the first semiconductor layer 154 n, thefirst source electrode 173 n, and the first drain electrode 175 n form afirst transistor. A channel region of the first transistor is formed inthe first semiconductor layer 154 n part between the first sourceelectrode 173 n and the first drain electrode 175 n.

The second gate electrode 124 l, the second semiconductor layer 154 l,the second source electrode 173 l, and the second drain electrode 175 lform a second transistor. The channel region of the second transistor isformed in the second semiconductor layer 154 l part between the secondsource electrode 173 l and the second drain electrode 175 l.

The third gate electrode 124 m, the third semiconductor layer 154 m, thethird source electrode 173 m, and the third drain electrode 175 m form athird transistor. The channel region of the third transistor is formedin the third semiconductor layer 154 m part between the third sourceelectrode 173 m and the third drain electrode 175 m.

In one pixel column, the second transistor and the third transistor areconnected to the second data line 171 b, and the first transistor isconnected to the first data line 171 a from each other.

Ohmic contacts may be disposed between the first, second, and thirdsemiconductor layers 154 n, 154 l, and 154 m and the first, second, andthird source electrodes 173 n, 173 l, and 173 m and between the first,second, and third semiconductor layers 154 n, 154 l, and 154 m and thefirst, second, and third drain electrodes 175 n, 175 l, and 175 m.

A passivation layer 160 is disposed on the plurality of data lines, theplurality of drain electrodes, and the part of the first, second, andthird semiconductor layers 154 n, 154 l, and 154 m in which the channelregion is formed. The passivation layer 160 may include an inorganicmaterial such as a silicon nitride (SiNx) and a silicon oxide (SiOx), oran organic material. Also, the passivation layer 160 may have themultilayer structure including an inorganic material layer and anorganic material layer.

A plurality of reflective layers are disposed on the passivation layer160. The plurality of reflective layers include a first reflective layer165 n, a second reflective layer 165 l, and a third reflective layer 165m. The first reflective layer 165 n, the second reflective layer 165 l,and the third reflective layer 165 m respectively extend in the firstdirection and include the conductive material having high reflectivitysuch as aluminum (Al), aluminum alloys, silver (Ag), silver alloys,molybdenum (Mo), and molybdenum alloys.

The first reflective layer 165 n covers the entire first gate line 121 nand first transistor. Also, the first reflective layer 165 n extends inthe first direction and covers an entire width of a portion of the firstdata line 171 a and the second data line 171 b. Also, the firstreflective layer 165 n overlaps a part of the first storage capacitiveplate 177 n and a part of the third storage capacitive plate 177 m.

The second reflective layer 165 l covers the entire second gate line 121l and the second transistor. Also, the second reflective layer 165 lextends in the first direction and covers the entire width of a portionof the first data line 171 a and the second data line 171 b. Further,the second reflective layer 165 l overlaps a part of the first storagecapacitive plate 177 n and a part of the second storage capacitive plate(not shown).

The third reflective layer 165 m covers the entire width of the thirdgate line 121 m and the third transistor. Also, the third reflectivelayer 165 m extends in the first direction and covers the entire widthof a portion of the first data line 171 a and the second data line 171b. Further, the third reflective layer 165 m overlaps a part of thethird storage capacitive plate 177 m and a part of the storagecapacitive plate (not shown) disposed under the third storage capacitiveplate 177 m in the second direction on a plane.

A plurality of color filters are disposed on the plurality of reflectivelayers. The plurality of color filters includes a red color filter 230R,a green color filter 230G, a blue color filter 230B, and a white colorfilter 230W.

The red color filter 230R and the green color filter 230G are disposedto be adjacent in the first direction, and the red color filter 230R andthe blue color filter 230B are disposed to be adjacent in the seconddirection. The blue color filter 230B and the white color filter 230Ware disposed to be adjacent in the first direction, and the green colorfilter 230G and the white color filter 230W are disposed to be adjacentin the second direction. The red color filter 230R, the green colorfilter 230G, the blue color filter 230B, and the white color filter 230Ware repeatedly disposed with the above-described arrangement structure.

The red color filter 230R and the green color filter 230G are disposedon the first reflective layer 165 n. Also, parts of the red color filter230R and the green color filter 230G are disposed on the thirdreflective layer 165 m.

On a plane, the blue color filter 230B and the white color filter 230Wthat are disposed above the red color filter 230R and the green colorfilter 230G disposed in the second direction are disposed above thesecond reflective layer 1651. Also, on a plane, the blue color filter230B and the part of the white color filter 230W that are disposed abovethe red color filter 230R and the green color filter 230G in the seconddirection are disposed above the first reflective layer 165 n.

On a plane, the blue color filter 230B and the white color filter 230Wthat are disposed under the red color filter 230R and the green colorfilter 230G in the second direction are disposed above the thirdreflective layer 165 m. Also, on a plane, the blue color filter 230B andthe part of the white color filter 230W that are disposed under the redcolor filter 230R and the green color filter 230G in the seconddirection are disposed above the reflective layer (not shown) disposedunder the third reflective layer 165 m in the second direction on aplane.

That is, in one pixel column, two color filters representing colorsdifferent from each other are disposed on one reflective layer.

An first overcoat 180 is disposed on the plurality of color filters. Thefirst overcoat 180 includes the organic material, and an upper surfacethereof may be flat.

The first overcoat 180 and the passivation layer 160 include a pluralityof contact holes. The plurality of contact holes includes a firstcontact hole 185 n, a second contact hole (not shown), and a thirdcontact hole 185 m. The first contact hole 185 n overlaps the firststorage capacitive plate 177 n, and the third contact hole 185 moverlaps the third storage capacitive plate 177 m. Also, the secondcontact hole is disposed above the first contact hole 185 n on a planeand overlaps the second storage capacitive plate (not shown).

A plurality of pixel electrodes are disposed on the first overcoat 180.The plurality of pixel electrodes are made of a transparent conductivematerial such as ITO (indium tin oxide) or IZO (indium zinc oxide), andinclude a first pixel electrode 190 n, a second pixel electrode 190 l,and a third pixel electrode 190 m.

The pixel electrode overlaps one color filter. For example, referring toFIG. 2, the first pixel electrode 190 n overlaps the red color filter230R, and the second pixel electrode 190 l overlaps the blue colorfilter 230B disposed above the red color filter 230R in the seconddirection on a plane. The third pixel electrode 190 m overlaps the bluecolor filter 230B disposed under the red color filter 230R in the seconddirection on a plane.

The first pixel electrode 190 n overlaps the first gate line 121 n andthe first transistor, and is connected to the third storage capacitiveplate 177 m through the third contact hole 185 m. The third storagecapacitive plate 177 m extends from the third drain electrode 175 m suchthat the first pixel electrode 190 n is connected to the thirdtransistor.

The second pixel electrode 190 l overlaps the second gate line 121 l andthe second transistor, and is connected to the first storage capacitiveplate 177 n through the first contact hole 185 n. The first storagecapacitive plate 177 n extends from the first drain electrode 175 n suchthat the second pixel electrode 190 l is connected to the firsttransistor.

The third pixel electrode 190 m overlaps the third gate line 121 m andthe third transistor, and is connected to the storage capacitive plate(not shown) disposed under the third storage capacitive plate 177 m on aplane through the contact hole (not shown) disposed under the firstcontact hole 185 n on a plane. On a plane, the storage capacitive platedisposed under the third storage capacitive plate 177 m extends from thedrain electrode (not shown) disposed under the third drain electrode 175m on a plane such that the third pixel electrode 190 m is connected tothe transistor disposed under the third transistor on a plane.

As above-described, the pixel electrode according to the presentexemplary embodiment is connected to the transistor disposed downward inthe second direction on a plane as well as the overlapped transistor.

In general, the transistor is turned on such that the voltage applied tothe pixel electrode must be maintained even if the transistor is turnedsubsequently off; however, the voltage applied to the pixel electrode isdistorted by a parasitic capacitance between the gate electrode and thesource/drain electrodes of the transistor. Also, the parasiticcapacitance generated by the overlapping of the gate line and the pixelelectrode is further added such that the distortion of the voltageapplied to the pixel electrode is non-negligible.

In the present exemplary embodiment, however, as each pixel electrode isconnected to the transistor disposed at the following row in the seconddirection on a plane as well as the overlapped transistor, even if thetransistor enters the turned-on state, since the voltage is not appliedto the overlapped pixel electrode, the distortion of the voltage appliedto the pixel electrode due to the parasitic capacitance by theoverlapping of the transistor and the gate line, and the pixelelectrode, may be prevented.

Also, in the present exemplary embodiment, the reflective layer isdisposed between the gate line and the data line, and the pixelelectrode. The reflective layer prevents the coupling generated by thegate line and the data line, and the pixel electrode.

Also, in the present exemplary embodiment, the reflective layer extendsin the first direction, thereby covering the data line. The storagecapacitive plate is disposed between the reflective layers such that thestorage capacitive plate has a function of the reflective layer.Accordingly, the reflectivity of the liquid crystal display 1000 may beimproved.

Further, in the present exemplary embodiment, the color filter and theovercoat are disposed between the pixel electrode and the reflectivelayer such that the capacitance generation between the pixel electrodeand the reflective layer may be reduced.

Hereinafter, the second display panel 200 will be described.

A common electrode 270 is disposed between a second substrate 210 madeof the transparent glass or plastic and the liquid crystal layer 3. Ansecond overcoat 240 and a light blocking layer 220 are disposed betweenthe common electrode 270 and the second substrate 210. The secondovercoat 240 covers the light blocking layer 220. The light blockinglayer 220 is disposed corresponding to an area where the color filtersrepresenting the colors different from each other are in contact witheach other. That is, the light blocking layer 220 is disposedcorresponding to the first data line 171 a and between the pixelelectrodes in the second direction. Also, the light blocking layer 220may be disposed corresponding to the second data line 171 b.

On the other hand, the light blocking layer may be included in the firstdisplay panel rather than the second display panel. A structure in whichthe light blocking layer is included in the first display panel will bedescribed with reference to FIG. 5.

FIG. 5 is a view schematically showing an example of a cross-section ofa liquid crystal display according to another exemplary embodiment ofthe present inventive concept.

Referring to FIG. 5, the liquid crystal display according to the presentexemplary embodiment has the same structure as the liquid crystaldisplay according to FIG. 1 except for the position of the lightblocking layer 220. Accordingly, the description of the same structureis omitted.

The light blocking layer 220 is disposed on the first overcoat 180between the first pixel electrode 190 n and the second pixel electrode190 l, and one the part of the first pixel electrode 190 n and the partof the second pixel electrode 190 l. Also, the light blocking layer 220is disposed on the first overcoat 180 of the part corresponding to thedata line 171 and the first pixel electrode 190 n of the partcorresponding to the first data line 171 a. Also, the light blockinglayer 220 may be disposed corresponding to the second data line 171 b.Accordingly, the light blocking layer 220 is disposed corresponding tothe part where the color filters representing the different colors fromeach are in contact with each other.

While this invention has been described in connection with what ispresently considered to be practical exemplary embodiments, it is to beunderstood that the invention is not limited to the disclosedembodiments, but, on the contrary, is intended to cover variousmodifications and equivalent arrangements included within the spirit andscope of the appended claims.

DESCRIPTION OF SYMBOLS

-   121 n, 121 l, 121 m: first, second, third gate line-   124 n, 124 l, 124 m: first, second, third gate electrode-   131 n, 131 m: first, third storage electrode lines-   135 n, 135 m: first, third storage electrode-   154 n, 154 l, 154 m: first, second, third semiconductor layer-   165 n, 165 l, 165 m: first, second, third reflective layer-   171 a, 171 b: first and second data line-   173 n, 173 l, 173 m: first, second, third source electrode-   175 n, 175 l, 175 m: first, second, third drain electrode-   177 n, 177 m: first, second storage capacitive plate-   190 n, 190 l, 190 m: first, second, third pixel electrode

What is claimed is:
 1. A liquid crystal display comprising: a first substrate; a first gate line disposed on the first substrate and extending in a first direction; a second gate line disposed on the first substrate, extending in the first direction, and disposed above the first gate line in a second direction on a plane, the second direction perpendicular to the first direction; a first data line and a second data line disposed on the first substrate, insulated from the first gate line and the second gate line, the first data line and the second data line disposed to be close to each other; a first transistor connected to the first gate line and the first data line; a second transistor connected to the second gate line and the second data line; a first pixel electrode overlapping the first transistor and the first gate line; a second pixel electrode overlapping the second transistor and the second gate line; and a first reflective layer disposed between the first gate line and the first data line, disposed between the second data line and the first pixel electrode, and extending in the first direction, wherein the first pixel electrode is disposed under the second pixel electrode in the second direction on a plane, and the first transistor is connected to the second pixel electrode.
 2. The liquid crystal display of claim 1, wherein the first reflective layer covers the entire first gate line and the first transistor and covers an entire width of a portion of the first data line and an entire width of a portion of the second data line.
 3. The liquid crystal display of claim 2, further comprising a second reflective layer disposed between the second gate line and the first data line, disposed between the second data line and the second pixel electrode, and extending in the first direction.
 4. The liquid crystal display of claim 3, wherein the second reflective layer covers the entire second gate line and the second transistor, and covers the entire width of a portion of the first data line and the entire width of a portion of the second data line.
 5. The liquid crystal display of claim 4, further comprising: a third gate line disposed on the first substrate and disposed under the first gate line in the second direction on a plane; a third transistor connected to the third gate line and the second data line; and a third pixel electrode overlapping the third gate line and the third transistor and disposed under the first pixel electrode in the second direction on a plane.
 6. The liquid crystal display of claim 5, wherein the first pixel electrode is connected to the third transistor.
 7. The liquid crystal display of claim 6, further comprising a third reflective layer disposed between the third gate line and the first data line, disposed between the second data line and the third pixel electrode, and extending in the first direction.
 8. The liquid crystal display of claim 7, wherein the third reflective layer covers the entire third gate line and the third transistor, and covers the entire width of a portion of the first data line and the entire width of a portion of the second data line.
 9. The liquid crystal display of claim 8, wherein a boundary of the first pixel electrode and the second pixel electrode overlaps the first reflective layer, and a boundary of the first pixel electrode and the third pixel electrode overlaps the third reflective layer.
 10. The liquid crystal display of claim 9, further comprising: a first storage electrode line disposed on the first substrate and disposed between the first gate line and the second gate line on a plane; and a third storage electrode line disposed on the first substrate and disposed between the first gate line and the third gate line on a plane.
 11. The liquid crystal display of claim 10, wherein the first storage electrode line includes a first storage electrode protruded in the second direction on a plane, and the third storage electrode line includes a third storage electrode protruded in the second direction on a plane.
 12. The liquid crystal display of claim 11, wherein a drain terminal of the first transistor includes a first storage capacitive plate overlapping the first storage electrode, and the drain terminal of the third transistor includes a third storage capacitive plate overlapping the third storage electrode.
 13. The liquid crystal display of claim 12, wherein the first pixel electrode is connected to the third storage capacitive plate, and the second pixel electrode is connected to the first storage capacitive plate.
 14. The liquid crystal display of claim 13, wherein the boundary of the first reflective layer and the second reflective layer overlaps the first storage capacitive plate, and the boundary of the first reflective layer and the third reflective layer overlaps the third storage capacitive plate.
 15. The liquid crystal display of claim 14, wherein the first reflective layer, the second reflective layer, the third reflective layer, the first storage capacitive plate, and the third storage capacitive plate include the same material.
 16. The liquid crystal display of claim 15, further comprising: a first color filter disposed between the first pixel electrode and the first reflective layer; and a second color filter disposed between the second pixel electrode and the first reflective layer, and the first color filter and the second color filter represent different colors from each other.
 17. The liquid crystal display of claim 16, wherein the first substrate includes a display area displaying an image and a peripheral area enclosing the display area, the first reflective layer, the second reflective layer, and the third reflective layer are disposed at the display area and the peripheral area, and the first reflective layer, the second reflective layer, and the third reflective layer receive a ground voltage or a common voltage at the peripheral area. 